Answer:
Independent variable
Explanation:
In a scientific experiment, an independent variable is that variable which the experimenter changes or manipulates in order to effect an outcome. Only one independent variable should be tested at a time in a good experiment, all other variables should be kept constant. The initial independent variable in this experiment is TYPE OF SUBSTANCE put in the students' eyes.
However, according to the question, the researcher did not keep track of what they did in that free time. Hence, many of the people receiving the medicine spent their time outside and many of the people receiving the placebo spent their time inside. The location of every student should be a CONSTANT VARIABLE i.e. same for all students but now it has become an INDEPENDENT VARIABLE because it has been changed.
Answer:
The heroes of our day dreams vary; often as we grow, so does the idea One assertion is that heroes are born and not made; that heroism is a matter of fate. I think all the above persons are heroes but in different capacities
Explanation:
Nucleus! I hope I helped :)
<span>This central organelle in plant cells helps to keep the plant cell turgid:
</span><span>large central vacuole</span>
Mary Breckinridge developed her skills as a nurse midwife in the British Hospital for Mothers and Babies (England).
Mary Breckinridge was one of the first American nurse-midwives. She went to England to train as a nurse midwife since in America no such training was available. She founded the Frontier Nursing Service in 1925 and changed radically the midwifery practices in America. Her efforts resulted in an increase in infant and maternal survival rate.